Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 231:f9d42f8ff97b
BUGFIX Don't show (nosense) gas consumption in CCR mode (bug BB20).
author | JeanDo |
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date | Wed, 16 Mar 2011 19:03:01 +0100 |
parents | 24cd6e256d61 |
children | 2cbaa01dac26 |
rev | line source |
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116 | 1 // ************************************************************** |
2 // p2_deco.c | |
3 // | |
4 // Created on: 12.05.2009 | |
5 // Author: chsw | |
6 // | |
7 // ************************************************************** | |
8 | |
9 ////////////////////////////////////////////////////////////////////////////// | |
10 // OSTC - diving computer code | |
11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
12 // | |
13 // This program is free software: you can redistribute it and/or modify | |
14 // it under the terms of the GNU General Public License as published by | |
15 // the Free Software Foundation, either version 3 of the License, or | |
16 // (at your option) any later version. | |
17 // | |
18 // This program is distributed in the hope that it will be useful, | |
19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 // GNU General Public License for more details. | |
22 // | |
23 // You should have received a copy of the GNU General Public License | |
24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
25 // | |
26 ////////////////////////////////////////////////////////////////////////////// | |
27 | |
28 // ***************************** | |
29 // ** I N T R O D U C T I O N ** | |
30 // ***************************** | |
31 // | |
32 // OSTC | |
33 // | |
34 // code: | |
35 // p2_deco_main_c_v101.c | |
36 // part2 of the OSTC code | |
37 // code with constant O2 partial pressure routines | |
38 // under construction !! | |
39 // | |
40 // summary: | |
41 // decompression routines | |
42 // for the OSTC experimental project | |
43 // written by Christian Weikamp | |
44 // last revision __________ | |
45 // comments added _________ | |
46 // | |
47 // additional files: | |
48 // p2_tables_v100.romdata (other files) | |
49 // 18f4685_ostc_v100.lkr (linker script) | |
50 // | |
51 // history: | |
52 // 01/03/08 v100: first release candidate | |
53 // 03/13/08 v101: start of programming ppO2 code | |
54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
55 // 03/13/25 v101: open circuit gas change during deco | |
56 // 03/13/25 v101: CNS_fraction calculation | |
57 // 03/13/26 v101: optimization of tissue calc routines | |
58 // 07/xx/08 v102a: debug of bottom time routine | |
59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
64 // 07/13/10 v110: cns vault added | |
65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
169
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
217 | 73 // 2011/02/24: [jDG] Fixed inconsistencies introduced by gas switch delays. |
116 | 74 // |
167 | 75 // TODO: |
76 // + Allow to abort MD2 calculation (have to restart next time). | |
77 // | |
78 // Literature: | |
200 | 79 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
116 | 80 // Schr"oder, Kai & Reith, Steffen; 2000; S"attigungsvorg"ange beim Tauchen, das Modell ZH-L16, Funktionsweise von Tauchcomputern; http://www.achim-und-kai.de/kai/tausim/saett_faq |
81 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
82 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
83 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
84 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
167 | 85 // |
86 // | |
116 | 87 |
88 // ********************* | |
89 // ** I N C L U D E S ** | |
90 // ********************* | |
91 #include <math.h> | |
167 | 92 |
192 | 93 // *********************************************** |
94 // ** V A R I A B L E S D E F I N I T I O N S ** | |
95 // *********************************************** | |
96 | |
97 #include "p2_definitions.h" | |
98 #include "shared_definitions.h" | |
99 | |
200 | 100 // Water vapour partial pressure in the lumb. |
101 static const float ppWVapour = 0.0627; | |
102 | |
167 | 103 // ************************* |
104 // ** P R O T O T Y P E S ** | |
105 // ************************* | |
106 | |
107 static void calc_hauptroutine(void); | |
108 static void calc_nullzeit(void); | |
109 | |
192 | 110 static void calc_tissue(PARAMETER unsigned char period); |
111 static void calc_limit(PARAMETER float GF_current); | |
112 | |
167 | 113 static void clear_tissue(void); |
114 static void calc_ascenttime(void); | |
115 static void update_startvalues(void); | |
169
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116 static void clear_deco_table(void); |
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117 static void update_deco_table(void); |
192 | 118 |
119 static void backup_sim_pres_tissue(void); | |
120 static void restore_sim_pres_tissue(void); | |
121 static void sim_tissue(PARAMETER unsigned char period); | |
122 static void sim_limit(PARAMETER float GF_current); | |
167 | 123 static void calc_gradient_factor(void); |
124 static void calc_wo_deco_step_1_min(void); | |
125 | |
126 static void calc_hauptroutine_data_input(void); | |
127 static void calc_hauptroutine_update_tissues(void); | |
128 static void calc_hauptroutine_calc_deco(void); | |
169
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129 static void sim_ascent_to_first_stop(void); |
167 | 130 |
217 | 131 static void deepest_gas_switch(void); |
132 static void best_gas_switch(void); | |
133 static void set_gas(void); | |
134 | |
171 | 135 static void calc_nextdecodepth(void); |
116 | 136 |
200 | 137 //---- Bank 4 parameters ----------------------------------------------------- |
163 | 138 #pragma udata bank4=0x400 |
116 | 139 |
140 static float temp_limit; | |
141 static float GF_low; | |
142 static float GF_high; | |
143 static float GF_delta; | |
192 | 144 static unsigned char low_depth; // Depth of deepest stop |
145 static float locked_GF_step; // GF_delta / low_depth | |
146 | |
147 static unsigned char temp_depth_limit; | |
171 | 148 |
192 | 149 // Simulation context: used to predict ascent. |
150 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
151 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
116 | 152 |
192 | 153 // Real context: what we are doing now. |
154 static float calc_lead_tissue_limit; // | |
116 | 155 |
169
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156 static unsigned char internal_deco_time[32]; |
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157 static unsigned char internal_deco_depth[32]; |
116 | 158 |
159 static float cns_vault; | |
160 static float pres_tissue_vault[32]; | |
161 | |
163 | 162 //---- Bank 5 parameters ----------------------------------------------------- |
163 #pragma udata bank5=0x500 | |
164 | |
167 | 165 static unsigned char ci; |
116 | 166 static float pres_respiration; |
167 static float pres_surface; | |
168 static float temp_deco; | |
200 | 169 static float ppO2; |
170 static float ppHe; | |
116 | 171 static float temp_tissue; |
200 | 172 static float N2_ratio; // Breathed gas nitrogen ratio. |
173 static float He_ratio; // Breathed gas helium ratio. | |
174 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
175 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
176 static float var_He_a; // Bühlmann a, for current He tissue. | |
177 static float var_He_b; // Bühlmann b, for current He tissue. | |
178 static float var_N2_e; // Exposition, for current N2 tissue. | |
179 static float var_He_e; // Exposition, for current He tissue. | |
116 | 180 |
164 | 181 static float pres_diluent; // new in v.101 |
182 static float const_ppO2; // new in v.101 | |
183 static float deco_ppO2_change; // new in v.101 | |
184 static float deco_ppO2; // new in v.101 | |
116 | 185 |
200 | 186 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
203 | 187 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
188 static unsigned short sim_dive_mins; // Simulated dive time. | |
200 | 189 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
190 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
191 static float CNS_fraction; // new in v.101 | |
192 static float float_saturation_multiplier; // new in v.101 | |
193 static float float_desaturation_multiplier; // new in v.101 | |
167 | 194 static float float_deco_distance; // new in v.101 |
195 static char flag_in_divemode; // new in v.108 | |
196 | |
225 | 197 static unsigned char deco_gas_change[5]; // new in v.109 |
167 | 198 |
163 | 199 //---- Bank 6 parameters ----------------------------------------------------- |
200 #pragma udata bank6=0x600 | |
116 | 201 |
197 | 202 float pres_tissue[32]; |
203 float pres_tissue_limit[16]; | |
204 float sim_pres_tissue_limit[16]; | |
116 | 205 |
163 | 206 //---- Bank 7 parameters ----------------------------------------------------- |
207 #pragma udata bank7=0x700 | |
208 | |
197 | 209 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
116 | 210 static float sim_pres_tissue_backup[32]; |
211 | |
163 | 212 //---- Bank 8 parameters ----------------------------------------------------- |
116 | 213 #pragma udata bank8=0x800 |
163 | 214 |
116 | 215 static char md_pi_subst[256]; |
122
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216 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
116 | 217 |
163 | 218 //---- Bank 9 parameters ----------------------------------------------------- |
167 | 219 #pragma udata bank9=0x900 |
116 | 220 |
163 | 221 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
116 | 222 |
164 | 223 // internal, dbg: |
167 | 224 static unsigned char DBG_char_I_deco_model; // new in v.108. |
164 | 225 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
212 | 226 static unsigned char DBG_deco_gas_change; // new in v.108 |
224 | 227 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
228 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
164 | 229 static float DBG_pres_surface; // new in v.108 |
230 static float DBG_GF_low; // new in v.108 | |
231 static float DBG_GF_high; // new in v.108 | |
232 static float DBG_const_ppO2; // new in v.108 | |
233 static float DBG_deco_ppO2_change; // new in v.108 | |
234 static float DBG_deco_ppO2; // new in v.108 | |
235 static float DBG_float_saturation_multiplier; // new in v.108 | |
236 static float DBG_float_desaturation_multiplier; // new in v.108 | |
237 static float DBG_float_deco_distance; // new in v.108 | |
238 static float DBG_N2_ratio; // new in v.108 | |
239 static float DBG_He_ratio; // new in v.108 | |
240 | |
167 | 241 ////////////////////////////////////////////////////////////////////////////// |
242 ////////////////////////////////////////////////////////////////////////////// | |
243 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
244 ////////////////////////////////////////////////////////////////////////////// | |
245 ////////////////////////////////////////////////////////////////////////////// | |
246 // | |
247 // End of PROM code is 17F00, So push tables on PROM top... | |
248 // | |
249 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
250 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
116 | 251 |
167 | 252 // Magic table to compute the MD2 HASH |
253 // | |
254 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
203 | 255 rom const rom unsigned short md_pi[] = |
116 | 256 { |
257 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
258 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
259 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
260 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
261 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
262 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
263 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
264 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
265 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
266 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
267 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
268 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
269 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
270 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
271 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
272 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
273 }; | |
274 | |
167 | 275 ////////////////////////////////////////////////////////////////////////////// |
276 ////////////////////////////////////////////////////////////////////////////// | |
277 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
278 ////////////////////////////////////////////////////////////////////////////// | |
279 ////////////////////////////////////////////////////////////////////////////// | |
280 // | |
116 | 281 // all new in v.102 |
282 // moved from 0x0D000 to 0x0C000 in v.108 | |
283 | |
284 #pragma code p2_deco = 0x0C000 | |
285 | |
167 | 286 ////////////////////////////////////////////////////////////////////////////// |
287 // DBS - debug on start of dive | |
288 // | |
289 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
116 | 290 { |
167 | 291 overlay char i; // Local loop index. |
292 | |
293 //---- Reset DEBUG bit fields -------------------------------------------- | |
116 | 294 int_O_DBS_bitfield = 0; |
295 int_O_DBS2_bitfield = 0; | |
296 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
297 int_O_DBG_pre_bitfield = DBG_RESTART; | |
298 else | |
299 int_O_DBG_pre_bitfield = DBG_RUN; | |
300 int_O_DBG_post_bitfield = 0; | |
167 | 301 |
302 //---- Set 20meters ND limit --------------------------------------------- | |
116 | 303 char_O_NDL_at_20mtr = 255; |
304 | |
167 | 305 //---- Copy all dive parameters ------------------------------------------ |
116 | 306 DBG_N2_ratio = N2_ratio; |
307 DBG_He_ratio = He_ratio; | |
308 DBG_char_I_deco_model = char_I_deco_model; | |
309 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
310 DBG_pres_surface = pres_surface; | |
311 DBG_GF_low = GF_low; | |
312 DBG_GF_high = GF_high; | |
313 DBG_const_ppO2 = const_ppO2; | |
314 DBG_deco_ppO2_change = deco_ppO2_change; | |
315 DBG_deco_ppO2 = deco_ppO2; | |
224 | 316 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
317 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
225 | 318 DBG_deco_gas_change = deco_gas_change[0]; |
116 | 319 DBG_float_saturation_multiplier = float_saturation_multiplier; |
320 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
321 DBG_float_deco_distance = float_deco_distance; | |
322 | |
167 | 323 //---- Setup some error (?) conditions ----------------------------------- |
116 | 324 if(char_I_deco_model) |
325 int_O_DBS_bitfield |= DBS_mode; | |
326 if(const_ppO2) | |
327 int_O_DBS_bitfield |= DBS_ppO2; | |
167 | 328 for(i = 16; i < 32; i++) |
329 if(pres_tissue[i]) | |
116 | 330 int_O_DBS_bitfield |= DBS_HE_sat; |
331 if(deco_ppO2_change) | |
332 int_O_DBS_bitfield |= DBS_ppO2chg; | |
333 if(float_saturation_multiplier < 0.99) | |
334 int_O_DBS_bitfield |= DBS_SAT2l; | |
335 if(float_saturation_multiplier > 1.3) | |
336 int_O_DBS_bitfield |= DBS_SAT2h; | |
337 if(GF_low < 0.19) | |
338 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
339 if(GF_low > 1.01) | |
340 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
341 if(GF_high < 0.6) | |
342 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
343 if(GF_high > 1.01) | |
344 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
345 if((N2_ratio + He_ratio) > 0.95) | |
346 int_O_DBS_bitfield |= DBS_GASO22l; | |
347 if((N2_ratio + He_ratio) < 0.05) | |
348 int_O_DBS_bitfield |= DBS_GASO22h; | |
349 if(float_deco_distance > 0.25) | |
350 int_O_DBS_bitfield |= DBS_DIST2h; | |
351 if(char_I_depth_last_deco > 8) | |
352 int_O_DBS_bitfield |= DBS_LAST2h; | |
224 | 353 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
116 | 354 int_O_DBS_bitfield |= DBS_DECOO2l; |
224 | 355 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
116 | 356 int_O_DBS_bitfield |= DBS_DECOO2h; |
357 if(pres_respiration > 3.0) | |
358 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
359 if(pres_surface - pres_respiration > 0.2) | |
360 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
361 if(pres_surface < 0.75) | |
362 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
363 if(pres_surface > 1.11) | |
364 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
365 if(float_desaturation_multiplier < 0.70) | |
366 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
367 if(float_desaturation_multiplier > 1.01) | |
368 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
369 if(GF_low > GF_high) | |
370 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
371 } | |
372 | |
167 | 373 ////////////////////////////////////////////////////////////////////////////// |
374 // DBG - set DBG to end_of_dive | |
375 // | |
376 static void set_dbg_end_of_dive(void) | |
116 | 377 { |
378 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
379 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
380 } | |
381 | |
167 | 382 ////////////////////////////////////////////////////////////////////////////// |
383 // DBG - NDL at first 20 m. hit | |
384 // | |
385 static void check_ndl(void) | |
116 | 386 { |
167 | 387 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
388 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
389 ) | |
116 | 390 { |
167 | 391 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
392 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
184 | 393 char_O_NDL_at_20mtr = 254; |
116 | 394 } |
395 } | |
396 | |
167 | 397 ////////////////////////////////////////////////////////////////////////////// |
398 // DBG - multi main during dive | |
399 // | |
184 | 400 static void check_dbg(PARAMETER char is_post_check) |
116 | 401 { |
203 | 402 overlay unsigned short temp_DBS = 0; |
200 | 403 overlay unsigned char i; // Local loop index. |
167 | 404 |
116 | 405 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
406 temp_DBS |= DBG_c_gas; | |
407 if(DBG_const_ppO2 != const_ppO2) | |
408 temp_DBS |= DBG_c_ppO2; | |
167 | 409 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
410 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
411 ) | |
116 | 412 temp_DBS |= DBG_CdeSAT; |
413 if(DBG_char_I_deco_model != char_I_deco_model) | |
414 temp_DBS |= DBG_C_MODE; | |
415 if(DBG_pres_surface != pres_surface) | |
416 temp_DBS |= DBG_C_SURF; | |
167 | 417 |
418 if( !DBS_HE_sat && !He_ratio) | |
419 for(i = 16; i < 32; i++) | |
420 if(pres_tissue[i]) | |
116 | 421 temp_DBS |= DBG_HEwoHE; |
167 | 422 |
116 | 423 if(DBG_deco_ppO2 != deco_ppO2) |
424 temp_DBS |= DBG_C_DPPO2; | |
167 | 425 |
225 | 426 if( DBG_deco_gas_change != deco_gas_change[0] |
224 | 427 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
428 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
116 | 429 temp_DBS |= DBG_C_DGAS; |
167 | 430 |
116 | 431 if(DBG_float_deco_distance != float_deco_distance) |
432 temp_DBS |= DBG_C_DIST; | |
433 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
434 temp_DBS |= DBG_C_LAST; | |
167 | 435 if( DBG_GF_low != GF_low |
436 || DBG_GF_high != GF_high ) | |
116 | 437 temp_DBS |= DBG_C_GF; |
438 if(pres_respiration > 13.0) | |
439 temp_DBS |= DBG_PHIGH; | |
440 if(pres_surface - pres_respiration > 0.2) | |
441 temp_DBS |= DBG_PLOW; | |
442 if(is_post_check) | |
443 int_O_DBG_post_bitfield |= temp_DBS; | |
444 else | |
445 int_O_DBG_pre_bitfield |= temp_DBS; | |
446 } | |
447 | |
167 | 448 ////////////////////////////////////////////////////////////////////////////// |
449 // DBG - prior to calc. of dive | |
450 // | |
451 static void check_pre_dbg(void) | |
116 | 452 { |
453 check_dbg(0); | |
454 } | |
455 | |
167 | 456 ////////////////////////////////////////////////////////////////////////////// |
457 // DBG - after decocalc of dive | |
458 // | |
459 static void check_post_dbg(void) | |
116 | 460 { |
461 check_dbg(1); | |
462 } | |
463 | |
165 | 464 ////////////////////////////////////////////////////////////////////////////// |
167 | 465 ////////////////////////////////////////////////////////////////////////////// |
466 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
467 ////////////////////////////////////////////////////////////////////////////// | |
468 ////////////////////////////////////////////////////////////////////////////// | |
469 | |
203 | 470 static short read_custom_function(PARAMETER unsigned char cf) |
167 | 471 { |
184 | 472 #ifdef CROSS_COMPILE |
473 extern unsigned short custom_functions[]; | |
474 return custom_functions[cf]; | |
475 #else | |
167 | 476 extern unsigned char hi, lo; |
477 extern void getcustom15(); | |
478 _asm | |
479 movff cf,WREG | |
480 call getcustom15,0 | |
481 movff lo,PRODL | |
482 movff hi,PRODH | |
483 _endasm | |
184 | 484 #endif |
167 | 485 } |
486 | |
487 ////////////////////////////////////////////////////////////////////////////// | |
165 | 488 // read buhlmann tables for compatriment ci |
167 | 489 // If period == 0 : 2sec interval |
490 // 1 : 1 min interval | |
491 // 2 : 10 min interval. | |
184 | 492 static void read_buhlmann_coefficients(PARAMETER char period) |
165 | 493 { |
184 | 494 #ifndef CROSS_COMPILE |
167 | 495 // Note: we don't use far rom pointer, because the |
496 // 24 bits is to complex, hence we have to set | |
497 // the UPPER page ourself... | |
498 // --> Set zero if tables are moved to lower pages ! | |
499 _asm | |
500 movlw 1 | |
501 movwf TBLPTRU,0 | |
502 _endasm | |
184 | 503 #endif |
197 | 504 assert( 0 <= ci && ci < 16 ); |
167 | 505 |
165 | 506 var_N2_a = buhlmann_a[ci]; |
507 var_N2_b = buhlmann_b[ci]; | |
167 | 508 var_He_a = (buhlmann_a+16)[ci]; |
509 var_He_b = (buhlmann_b+16)[ci]; | |
510 | |
165 | 511 // Check reading consistency: |
512 if( (var_N2_a < 0.231) | |
513 || (var_N2_a > 1.27) | |
514 || (var_N2_b < 0.504) | |
515 || (var_N2_b > 0.966) | |
516 || (var_He_a < 0.510) | |
517 || (var_He_a > 1.75) | |
518 || (var_He_b < 0.423) | |
519 || (var_He_b > 0.927) | |
520 ) | |
521 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
167 | 522 |
165 | 523 // Integration intervals. |
167 | 524 switch(period) |
165 | 525 { |
167 | 526 case -1://---- no interval ----------------------------------------------- |
527 var_N2_e = var_He_e = 0.0; | |
528 break; | |
529 | |
165 | 530 case 0: //---- 2 sec ----------------------------------------------------- |
531 var_N2_e = e2secs[ci]; | |
167 | 532 var_He_e = (e2secs+16)[ci]; |
165 | 533 |
534 // Check reading consistency: | |
535 if( (var_N2_e < 0.0000363) | |
536 || (var_N2_e > 0.00577) | |
537 || (var_He_e < 0.0000961) | |
538 || (var_He_e > 0.150) | |
539 ) | |
540 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
541 | |
542 break; | |
543 | |
544 case 1: //---- 1 min ----------------------------------------------------- | |
545 var_N2_e = e1min[ci]; | |
167 | 546 var_He_e = (e1min+16)[ci]; |
165 | 547 |
548 // Check reading consistency: | |
549 if( (var_N2_e < 1.09E-3) | |
550 || (var_N2_e > 0.1592) | |
551 || (var_He_e < 0.00288) | |
552 || (var_He_e > 0.3682) | |
553 ) | |
554 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
555 | |
556 break; | |
557 | |
558 case 2: //---- 10 min ---------------------------------------------------- | |
559 var_N2_e = e10min[ci]; | |
167 | 560 var_He_e = (e10min+16)[ci]; |
165 | 561 |
562 // Check reading consistency: | |
563 if( (var_N2_e < 0.01085) | |
564 || (var_N2_e > 0.82323) | |
565 || (var_He_e < 0.02846) | |
566 || (var_He_e > 0.98986) | |
567 ) | |
568 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
569 | |
570 break; | |
197 | 571 |
572 default: | |
573 assert(0); // Never go there... | |
165 | 574 } |
575 } | |
576 | |
577 ////////////////////////////////////////////////////////////////////////////// | |
167 | 578 // calc_next_decodepth_GF |
165 | 579 // |
116 | 580 // new in v.102 |
165 | 581 // |
116 | 582 // INPUT, changing during dive: |
192 | 583 // low_depth |
167 | 584 // |
116 | 585 // INPUT, fixed during dive: |
167 | 586 // pres_surface |
587 // GF_delta | |
588 // GF_high | |
589 // GF_low | |
171 | 590 // char_I_depth_last_deco |
167 | 591 // float_deco_distance |
592 // | |
116 | 593 // OUTPUT |
171 | 594 // locked_GF_step |
167 | 595 // temp_depth_limt |
192 | 596 // low_depth |
167 | 597 // |
171 | 598 static void calc_nextdecodepth(void) |
167 | 599 { |
212 | 600 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
116 | 601 if (char_I_deco_model == 1) |
602 { | |
192 | 603 // Recompute leading gas limit, at current depth: |
604 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
605 assert( depth >= 0.0 ); | |
203 | 606 assert( low_depth < 255 ); |
167 | 607 |
192 | 608 if( depth > low_depth ) |
609 sim_limit( GF_low ); | |
610 else | |
611 sim_limit( GF_high - depth * locked_GF_step ); | |
612 | |
613 // Stops are needed ? | |
614 if( sim_lead_tissue_limit > pres_surface ) | |
615 { | |
616 // Deepest stop, in meter. | |
203 | 617 overlay unsigned char first_stop = 3 * (short)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); |
192 | 618 assert( first_stop < 128 ); |
171 | 619 |
212 | 620 // Apply correction for the shallowest stop. |
192 | 621 if( first_stop == 3 ) // new in v104 |
622 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
171 | 623 |
192 | 624 // Check all stops until one is higher than tolerated presure |
625 while(first_stop > 0) | |
626 { | |
627 overlay unsigned char next_stop; // Next index (0..30) | |
628 overlay float pres_stop; // Next depth (0m..90m) | |
171 | 629 |
192 | 630 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
631 next_stop = 0; | |
216 | 632 else if( first_stop == 6 ) |
633 next_stop = char_I_depth_last_deco; | |
192 | 634 else |
635 next_stop = first_stop - 3; // Index of next (upper) stop. | |
167 | 636 |
192 | 637 pres_stop = next_stop * 0.09995 // Meters to bar |
638 + pres_surface; | |
639 | |
212 | 640 // Keep GF_low until a first stop depth is found: |
641 if( next_stop >= low_depth ) | |
642 sim_limit( GF_low ); | |
643 else | |
644 // current GF is GF_high - alpha (GF_high - GF_low) | |
645 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
646 sim_limit( GF_high - next_stop * locked_GF_step ); | |
171 | 647 |
192 | 648 // upper limit (lowest pressure tolerated): |
649 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
650 break; | |
651 | |
652 // Else, validate that stop and loop... | |
653 first_stop = next_stop; | |
654 } | |
171 | 655 |
212 | 656 // Is it a new deepest first stop ? If yes this is the reference for |
657 // the varying gradient factor. So reset that: | |
658 if( first_stop > low_depth ) | |
659 { | |
660 // Store the deepest stop depth, as reference for GF_low. | |
661 low_depth = first_stop; | |
662 locked_GF_step = GF_delta / low_depth; | |
663 } | |
664 | |
665 // next stop is the last validated depth found, aka first_stop | |
192 | 666 temp_depth_limit = first_stop; // Stop depth, in meter. |
667 } | |
171 | 668 else |
192 | 669 temp_depth_limit = 0; // stop depth, in meter. |
116 | 670 } |
167 | 671 else //---- ZH-L16 model ------------------------------------------------- |
116 | 672 { |
192 | 673 overlay float pres_gradient; |
674 | |
675 // Original model | |
116 | 676 // optimized in v.101 |
171 | 677 // char_I_depth_last_deco included in v.101 |
116 | 678 |
192 | 679 // Compute sim_lead_tissue_limit too, but just once. |
680 sim_limit(1.0); | |
681 | |
682 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
167 | 683 if (pres_gradient >= 0) |
116 | 684 { |
192 | 685 pres_gradient /= 0.29985; // Bar --> stop number; |
203 | 686 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
212 | 687 if (temp_depth_limit != 0) // At surface ? |
116 | 688 { |
171 | 689 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
690 temp_depth_limit = char_I_depth_last_deco; | |
691 } | |
692 } | |
116 | 693 else |
192 | 694 temp_depth_limit = 0; // stop depth, in meter. |
171 | 695 } |
212 | 696 |
217 | 697 //---- Check gas change -------------------------------------------------- |
698 best_gas_switch(); // Update temp_depth_limit if there is a change, | |
212 | 699 // Calculate N2_ratio and He_ratio too. |
167 | 700 } |
116 | 701 |
167 | 702 ////////////////////////////////////////////////////////////////////////////// |
169
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703 // copy_deco_table |
167 | 704 // |
169
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705 // Buffer the stops, once computed, so we can continue to display them |
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706 // while computing the next set. |
167 | 707 // |
169
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708 static void copy_deco_table(void) |
116 | 709 { |
169
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710 // Copy depth of the first (deepest) stop, because when reversing |
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711 // order, it will be hard to find... |
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712 char_O_first_deco_depth = internal_deco_depth[0]; |
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713 char_O_first_deco_time = internal_deco_time [0]; |
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714 |
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715 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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716 { |
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717 overlay unsigned char x, y; |
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718 |
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719 //---- First: search the first non-null depth |
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720 for(x=31; x != 0; --x) |
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721 if( internal_deco_depth[x] != 0 ) break; |
116 | 722 |
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723 //---- Second: copy to output table (in reverse order) |
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724 for(y=0; y<32; y++, --x) |
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725 { |
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726 char_O_deco_depth[y] = internal_deco_depth[x]; |
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727 char_O_deco_time [y] = internal_deco_time [x]; |
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728 |
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729 // Stop only once the last transfer is done. |
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730 if( x == 0 ) break; |
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731 } |
116 | 732 |
169
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733 //---- Third: fill table end with null |
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734 for(y++; y<32; y++) |
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735 { |
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736 char_O_deco_time [y] = 0; |
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737 char_O_deco_depth[y] = 0; |
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738 } |
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739 } |
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740 else //---- Straight copy ------------------------------------------------ |
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741 { |
167 | 742 overlay unsigned char x; |
743 | |
169
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744 for(x=0; x<32; x++) |
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745 { |
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746 char_O_deco_depth[x] = internal_deco_depth[x]; |
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747 char_O_deco_time [x] = internal_deco_time [x]; |
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748 } |
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749 } |
167 | 750 } |
116 | 751 |
167 | 752 ////////////////////////////////////////////////////////////////////////////// |
116 | 753 // temp_tissue_safety // |
167 | 754 // |
116 | 755 // outsourced in v.102 |
167 | 756 // |
757 // Apply safety factors for brand ZH-L16 model. | |
758 // | |
759 static void temp_tissue_safety(void) | |
116 | 760 { |
197 | 761 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
762 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
763 | |
167 | 764 if( char_I_deco_model == 0 ) |
116 | 765 { |
766 if (temp_tissue < 0.0) | |
126 | 767 temp_tissue *= float_desaturation_multiplier; |
116 | 768 else |
126 | 769 temp_tissue *= float_saturation_multiplier; |
116 | 770 } |
167 | 771 } |
116 | 772 |
167 | 773 ////////////////////////////////////////////////////////////////////////////// |
774 ////////////////////////////////////////////////////////////////////////////// | |
116 | 775 // ** THE JUMP-IN CODE ** |
776 // ** for the asm code ** | |
167 | 777 ////////////////////////////////////////////////////////////////////////////// |
778 ////////////////////////////////////////////////////////////////////////////// | |
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779 |
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780 void fillDataStack(void) |
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781 { |
184 | 782 #ifndef CROSS_COMPILE |
122
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783 _asm |
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784 LFSR 1,C_STACK |
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785 MOVLW 0xCC |
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786 loop: MOVWF POSTINC1,0 |
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787 TSTFSZ FSR1L,0 |
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788 BRA loop |
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789 |
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790 LFSR 1,C_STACK |
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791 LFSR 2,C_STACK |
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792 _endasm |
184 | 793 #endif |
122
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794 } |
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795 |
167 | 796 ////////////////////////////////////////////////////////////////////////////// |
122
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797 // When calling C code from ASM context, the data stack pointer and |
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798 // frames should be reset. Bank3 is dedicated to the stack (see the |
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799 // .lkr script). |
184 | 800 #ifdef CROSS_COMPILE |
801 # define RESET_C_STACK | |
122
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802 #else |
184 | 803 # ifdef __DEBUG |
804 # define RESET_C_STACK fillDataStack(); | |
805 # else | |
806 # define RESET_C_STACK \ | |
807 _asm \ | |
808 LFSR 1, C_STACK \ | |
809 LFSR 2, C_STACK \ | |
810 _endasm | |
811 # endif | |
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812 #endif |
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813 |
167 | 814 ////////////////////////////////////////////////////////////////////////////// |
169
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815 // Called every 2 seconds during diving. |
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816 // update tissues every time. |
184 | 817 // |
169
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818 // Every 6 seconds (or slower when TTS > 16): |
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819 // - update deco table (char_O_deco_time/depth) with new values. |
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820 // - update ascent time, |
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821 // - set status to zero (so we can check there is new results). |
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822 // |
116 | 823 void deco_calc_hauptroutine(void) |
824 { | |
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825 RESET_C_STACK |
116 | 826 calc_hauptroutine(); |
827 int_O_desaturation_time = 65535; | |
828 } | |
829 | |
167 | 830 ////////////////////////////////////////////////////////////////////////////// |
184 | 831 // Reset decompression model: |
832 // + Set all tissues to equilibrium with Air at ambient pressure. | |
833 // + Reset last stop to 0m | |
834 // + Reset all model output. | |
116 | 835 void deco_clear_tissue(void) |
836 { | |
122
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837 RESET_C_STACK |
116 | 838 clear_tissue(); |
839 } | |
840 | |
167 | 841 ////////////////////////////////////////////////////////////////////////////// |
842 | |
116 | 843 void deco_calc_wo_deco_step_1_min(void) |
844 { | |
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845 RESET_C_STACK |
116 | 846 calc_wo_deco_step_1_min(); |
847 deco_calc_desaturation_time(); | |
848 } | |
849 | |
167 | 850 ////////////////////////////////////////////////////////////////////////////// |
851 | |
116 | 852 void deco_debug(void) |
853 { | |
122
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854 RESET_C_STACK |
116 | 855 } |
856 | |
167 | 857 ////////////////////////////////////////////////////////////////////////////// |
217 | 858 // Find deepest available gas. |
201 | 859 // |
225 | 860 // Input: deco_gas_change[] |
212 | 861 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. |
862 // | |
217 | 863 // Output: temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. |
212 | 864 // |
217 | 865 static void deepest_gas_switch(void) |
201 | 866 { |
203 | 867 overlay unsigned char temp_gas_switch = 0; |
212 | 868 overlay unsigned char switch_deco = 0; |
201 | 869 |
870 if (char_I_const_ppO2 == 0) | |
871 { | |
225 | 872 overlay unsigned char j; |
873 | |
874 // Loop over all enabled gas, to find the deepest enabled one above us. | |
875 for(temp_gas_switch=j=0; j<5; ++j) | |
876 { | |
877 if( temp_depth_limit <= deco_gas_change[j] ) | |
878 if( (temp_gas_switch == 0) || (switch_deco < deco_gas_change[j]) ) | |
879 { | |
880 temp_gas_switch = j+1; | |
881 switch_deco = deco_gas_change[j]; | |
882 } | |
883 } | |
201 | 884 } |
885 | |
203 | 886 // If there is a better gas available |
887 if( temp_gas_switch ) | |
201 | 888 { |
212 | 889 // Should restart gas-switch delay only when gas do changes... |
203 | 890 // sim_gas_last_used: used to detect just once in each ascent simu. |
891 // N2_ratio : used to detect when already breathing that gas. | |
217 | 892 if( temp_depth_limit != switch_deco |
226 | 893 && sim_gas_last_used != temp_gas_switch |
217 | 894 && sim_gas_delay <= sim_dive_mins ) |
203 | 895 { |
896 sim_gas_last_used = temp_gas_switch; | |
897 sim_gas_delay = read_custom_function(55); | |
201 | 898 |
203 | 899 // Apply depth correction ONLY if CF#55 is not null: |
900 if( sim_gas_delay > 0 ) | |
901 { | |
902 sim_gas_delay += sim_dive_mins; | |
212 | 903 temp_depth_limit = switch_deco; |
203 | 904 } |
201 | 905 } |
906 } | |
203 | 907 else |
908 sim_gas_delay = 0; | |
217 | 909 } |
910 | |
911 ////////////////////////////////////////////////////////////////////////////// | |
912 // Find best (shallowest) available gas. | |
913 // | |
914 // Input: deco_gas_change* | |
915 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. | |
916 // | |
917 // Output: temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. | |
918 // | |
919 static void best_gas_switch(void) | |
920 { | |
921 overlay unsigned char temp_gas_switch = 0; | |
922 overlay unsigned char switch_deco = 0; | |
923 | |
924 if (char_I_const_ppO2 == 0) | |
925 { | |
225 | 926 overlay unsigned char j; |
927 | |
928 // Loop over all enabled gas, to find the shallowest enabled one above us. | |
929 for(temp_gas_switch=j=0; j<5; ++j) | |
930 { | |
931 if( temp_depth_limit <= deco_gas_change[j] ) | |
932 if( (temp_gas_switch == 0) || (switch_deco > deco_gas_change[j]) ) | |
933 { | |
934 temp_gas_switch = j+1; | |
935 switch_deco = deco_gas_change[j]; | |
936 } | |
937 } | |
217 | 938 } |
939 | |
940 // If there is a better gas available | |
941 if( temp_gas_switch ) | |
942 { | |
943 // Should restart gas-switch delay only when gas do changes... | |
944 // sim_gas_last_used: used to detect just once in each ascent simu. | |
945 // N2_ratio : used to detect when already breathing that gas. | |
226 | 946 if( sim_gas_last_used != temp_gas_switch |
217 | 947 && sim_gas_delay <= sim_dive_mins ) |
948 { | |
949 sim_gas_last_used = temp_gas_switch; | |
950 sim_gas_delay = read_custom_function(55); | |
951 | |
952 // Apply depth correction ONLY if CF#55 is not null: | |
953 if( sim_gas_delay > 0 ) | |
954 { | |
955 sim_gas_delay += sim_dive_mins; | |
956 temp_depth_limit = switch_deco; | |
957 } | |
958 } | |
959 } | |
960 else | |
961 sim_gas_delay = 0; | |
962 } | |
963 | |
964 ////////////////////////////////////////////////////////////////////////////// | |
965 // Calculate gas switches | |
966 // | |
967 // | |
968 // Input: N2_ratio, He_ratio. | |
969 // sim_gas_last_used | |
970 // | |
971 // Output: calc_N2_ratio, calc_He_ratio | |
972 // | |
973 static void set_gas(void) | |
974 { | |
224 | 975 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
217 | 976 |
224 | 977 if( sim_gas_last_used == 0 ) |
978 { | |
979 calc_N2_ratio = N2_ratio; | |
980 calc_He_ratio = He_ratio; | |
981 } | |
982 else | |
983 { | |
984 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
985 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
217 | 986 } |
201 | 987 |
988 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
989 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
990 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
991 } | |
992 | |
993 ////////////////////////////////////////////////////////////////////////////// | |
994 // | |
212 | 995 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
996 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
997 // Water-vapor pressure inside lumbs (ppWVapour). | |
998 // | |
999 // Output: ppO2, ppHe. | |
1000 // | |
1001 static void sim_alveolar_presures(void) | |
201 | 1002 { |
212 | 1003 overlay float deco_diluent = temp_deco; // new in v.101 |
1004 | |
1005 //---- CCR mode : deco gas switch ? -------------------------------------- | |
201 | 1006 if (char_I_const_ppO2 != 0) |
1007 { | |
212 | 1008 // In CCR mode, calc_XX_ratio == XX_ratio. |
1009 if( temp_deco > deco_ppO2_change ) | |
1010 deco_diluent = ((temp_deco - const_ppO2)/(calc_N2_ratio + calc_He_ratio)); | |
201 | 1011 else |
212 | 1012 deco_diluent = ((temp_deco - deco_ppO2)/(calc_N2_ratio + calc_He_ratio)); |
1013 | |
1014 if (deco_diluent > temp_deco) | |
1015 deco_diluent = temp_deco; | |
201 | 1016 } |
1017 | |
212 | 1018 // Take deco offset into account, but not at surface. |
1019 if( deco_diluent > pres_surface ) | |
1020 deco_diluent += float_deco_distance; | |
1021 | |
1022 if( deco_diluent > ppWVapour ) | |
201 | 1023 { |
1024 ppO2 = calc_N2_ratio * (deco_diluent - ppWVapour); | |
1025 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); | |
1026 } | |
1027 else | |
1028 { | |
1029 ppO2 = 0.0; | |
1030 ppHe = 0.0; | |
1031 } | |
1032 assert( 0.0 <= ppO2 && ppO2 < 14.0 ); | |
1033 assert( 0.0 <= ppHe && ppHe < 14.0 ); | |
1034 } | |
1035 | |
1036 ////////////////////////////////////////////////////////////////////////////// | |
167 | 1037 // clear_tissue |
1038 // | |
165 | 1039 // optimized in v.101 (var_N2_a) |
167 | 1040 // |
1041 // preload tissues with standard pressure for the given ambient pressure. | |
1042 // Note: fixed N2_ratio for standard air. | |
201 | 1043 // |
167 | 1044 static void clear_tissue(void) |
116 | 1045 { |
1046 flag_in_divemode = 0; | |
1047 int_O_DBS_bitfield = 0; | |
1048 int_O_DBS2_bitfield = 0; | |
1049 int_O_DBG_pre_bitfield = 0; | |
1050 int_O_DBG_post_bitfield = 0; | |
1051 char_O_NDL_at_20mtr = 255; | |
1052 | |
167 | 1053 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
1054 N2_ratio = 0.7902; | |
212 | 1055 pres_respiration = int_I_pres_respiration * 0.001; |
164 | 1056 |
167 | 1057 for(ci=0; ci<16; ci++) |
126 | 1058 { |
197 | 1059 // cycle through the 16 Bühlmann tissues |
200 | 1060 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
164 | 1061 pres_tissue[ci] = p; |
197 | 1062 |
184 | 1063 read_buhlmann_coefficients(-1); |
165 | 1064 |
1065 p = (p - var_N2_a) * var_N2_b ; | |
164 | 1066 if( p < 0.0 ) |
1067 p = 0.0; | |
1068 pres_tissue_limit[ci] = p; | |
1069 | |
197 | 1070 // cycle through the 16 Bühlmann tissues for Helium |
167 | 1071 (pres_tissue+16)[ci] = 0.0; |
126 | 1072 } // for 0 to 16 |
116 | 1073 |
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1074 clear_deco_table(); |
126 | 1075 char_O_deco_status = 0; |
1076 char_O_nullzeit = 0; | |
168 | 1077 int_O_ascenttime = 0; |
126 | 1078 char_O_gradient_factor = 0; |
1079 char_O_relative_gradient_GF = 0; | |
197 | 1080 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
167 | 1081 } |
116 | 1082 |
167 | 1083 ////////////////////////////////////////////////////////////////////////////// |
1084 // calc_hauptroutine | |
1085 // | |
1086 // this is the major code in dive mode calculates: | |
116 | 1087 // the tissues, |
167 | 1088 // the bottom time, |
1089 // and simulates the ascend with all deco stops. | |
171 | 1090 // |
1091 // The deco_state sequence is : | |
1092 // 3 (at surface) | |
1093 // +---> 0 : calc nullzeit | |
1094 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
1095 // | +-> 1 : simulate up to 16min of stops. | |
1096 // | +------< not finished | |
1097 // +--------< finish | |
1098 // | |
167 | 1099 static void calc_hauptroutine(void) |
116 | 1100 { |
217 | 1101 static unsigned char backup_gas_used = 0; |
1102 static unsigned char backup_gas_delay = 0; | |
186 | 1103 |
116 | 1104 calc_hauptroutine_data_input(); |
1105 | |
1106 if(!flag_in_divemode) | |
1107 { | |
1108 flag_in_divemode = 1; | |
1109 create_dbs_set_dbg_and_ndl20mtr(); | |
1110 } | |
1111 else | |
1112 check_pre_dbg(); | |
1113 | |
1114 calc_hauptroutine_update_tissues(); | |
1115 calc_gradient_factor(); | |
1116 | |
167 | 1117 // toggle between calculation for nullzeit (bottom time), |
1118 // deco stops | |
1119 // and more deco stops (continue) | |
1120 switch( char_O_deco_status ) | |
116 | 1121 { |
186 | 1122 case 3: //---- At surface: start a new dive ------------------------------ |
1123 clear_deco_table(); | |
1124 copy_deco_table(); | |
200 | 1125 int_O_ascenttime = 0; // Reset DTR. |
1126 char_O_nullzeit = 0; // Reset bottom time. | |
1127 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
201 | 1128 |
217 | 1129 // Values that should be reset just once for the full real dive. |
1130 // This is used to record the lowest stop for the whole dive, | |
1131 // Including ACCROSS all simulated ascent. | |
1132 low_depth = 0; | |
1133 | |
1134 // Reset gas switch history. | |
1135 backup_gas_used = sim_gas_last_used = 0; | |
1136 backup_gas_delay = sim_gas_delay = 0; | |
203 | 1137 sim_dive_mins = 0; |
1138 break; | |
186 | 1139 |
167 | 1140 case 0: //---- bottom time ----------------------------------------------- |
1141 calc_nullzeit(); | |
1142 check_ndl(); | |
186 | 1143 char_O_deco_status = 2; // calc ascent next time. |
1144 break; | |
1145 | |
1146 case 2: //---- Simulate ascent to first stop ----------------------------- | |
203 | 1147 // Check proposed gas at begin of ascent simulation |
1148 sim_dive_mins = int_I_divemins; // and time. | |
212 | 1149 temp_depth_limit = (int)(0.95 + (pres_respiration - pres_surface) / 0.09985) ; // Starts from current real depth. |
217 | 1150 best_gas_switch(); |
1151 set_gas(); | |
203 | 1152 |
1153 backup_gas_used = sim_gas_last_used;// And save for later simu steps. | |
1154 backup_gas_delay = sim_gas_delay; | |
186 | 1155 |
1156 sim_ascent_to_first_stop(); | |
201 | 1157 |
1158 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
167 | 1159 break; |
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1160 |
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1161 case 1: //---- Simulate stops -------------------------------------------- |
167 | 1162 calc_hauptroutine_calc_deco(); |
186 | 1163 |
1164 // If simulation is finished, restore the GF low reference, so that | |
1165 // next ascent simulation is done from the current depth: | |
217 | 1166 if( char_O_deco_status == 0 ) |
186 | 1167 { |
201 | 1168 sim_gas_last_used = backup_gas_used; |
203 | 1169 sim_gas_delay = backup_gas_delay; |
186 | 1170 } |
167 | 1171 break; |
116 | 1172 } |
167 | 1173 |
116 | 1174 check_post_dbg(); |
1175 } | |
1176 | |
167 | 1177 ////////////////////////////////////////////////////////////////////////////// |
1178 // calc_hauptroutine_data_input | |
1179 // | |
1180 // Reset all C-code dive parameters from their ASM-code values. | |
1181 // Detect gas change condition. | |
1182 // | |
116 | 1183 void calc_hauptroutine_data_input(void) |
1184 { | |
203 | 1185 overlay short int_temp; |
126 | 1186 |
197 | 1187 pres_respiration = int_I_pres_respiration * 0.001; |
1188 pres_surface = int_I_pres_surface * 0.001; | |
1189 N2_ratio = char_I_N2_ratio * 0.01; | |
1190 He_ratio = char_I_He_ratio * 0.01; | |
1191 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
116 | 1192 |
126 | 1193 // ____________________________________________________ |
1194 // | |
1195 // _____________ G A S _ C H A N G E S ________________ | |
1196 // ____________________________________________________ | |
1197 | |
212 | 1198 // Keep a margin of 150mbar = 1.50m |
1199 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
1200 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
126 | 1201 |
225 | 1202 deco_gas_change[0] = 0; |
1203 deco_gas_change[1] = 0; | |
1204 deco_gas_change[2] = 0; | |
1205 deco_gas_change[3] = 0; | |
1206 deco_gas_change[4] = 0; | |
116 | 1207 |
203 | 1208 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
222
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1209 if(char_I_deco_gas_change[0]) |
126 | 1210 { |
222
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1211 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
225 | 1212 deco_gas_change[0] = char_I_deco_gas_change[0]; |
126 | 1213 } |
222
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1214 if(char_I_deco_gas_change[1]) |
126 | 1215 { |
222
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1216 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
225 | 1217 deco_gas_change[1] = char_I_deco_gas_change[1]; |
126 | 1218 } |
222
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1219 if(char_I_deco_gas_change[2]) |
126 | 1220 { |
222
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1221 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
225 | 1222 deco_gas_change[2] = char_I_deco_gas_change[2]; |
126 | 1223 } |
222
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1224 if(char_I_deco_gas_change[3]) |
126 | 1225 { |
222
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1226 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
225 | 1227 deco_gas_change[3] = char_I_deco_gas_change[3]; |
126 | 1228 } |
222
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1229 if(char_I_deco_gas_change[4]) |
126 | 1230 { |
222
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1231 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
225 | 1232 deco_gas_change[4] = char_I_deco_gas_change[4]; |
126 | 1233 } |
116 | 1234 |
197 | 1235 const_ppO2 = char_I_const_ppO2 * 0.01; |
1236 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
1237 + pres_surface | |
1238 + float_deco_distance; | |
1239 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
1240 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
1241 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
1242 GF_low = char_I_GF_Low_percentage * 0.01; | |
1243 GF_high = char_I_GF_High_percentage * 0.01; | |
126 | 1244 GF_delta = GF_high - GF_low; |
116 | 1245 } |
1246 | |
167 | 1247 ////////////////////////////////////////////////////////////////////////////// |
171 | 1248 // |
1249 // | |
116 | 1250 void calc_hauptroutine_update_tissues(void) |
1251 { | |
197 | 1252 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
1253 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
1254 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
1255 | |
1256 if (char_I_const_ppO2 == 0) // new in v.101 | |
167 | 1257 pres_diluent = pres_respiration; // new in v.101 |
186 | 1258 else |
1259 { | |
167 | 1260 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
186 | 1261 if (pres_diluent > pres_respiration) // new in v.101 |
1262 pres_diluent = pres_respiration; // new in v.101 | |
1263 } | |
200 | 1264 if (pres_diluent > ppWVapour) // new in v.101 |
116 | 1265 { |
200 | 1266 ppO2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
1267 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 | |
116 | 1268 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
1269 } | |
167 | 1270 else // new in v.101 |
116 | 1271 { |
200 | 1272 ppO2 = 0.0; // new in v.101 |
1273 ppHe = 0.0; // new in v.101 | |
116 | 1274 char_O_diluent = 0; |
1275 } | |
1276 | |
1277 if(!char_I_step_is_1min) | |
192 | 1278 calc_tissue(0); |
116 | 1279 else |
192 | 1280 calc_tissue(1); |
186 | 1281 |
192 | 1282 // Calc limit for surface, ie. GF_high. |
1283 calc_limit(GF_high); | |
186 | 1284 |
203 | 1285 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
1286 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
192 | 1287 |
1288 // if guiding tissue can not be exposed to surface pressure immediately | |
1289 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
116 | 1290 { |
169
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1291 char_O_nullzeit = 0; // deco necessary |
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1292 char_O_deco_status = 2; // calculate ascent on next iteration. |
116 | 1293 } |
171 | 1294 } |
1295 | |
116 | 1296 |
167 | 1297 ////////////////////////////////////////////////////////////////////////////// |
169
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1298 // Compute stops. |
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1299 // |
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1300 // Note: because this can be very long, break on 16 iterations, and set state |
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1301 // to 0 when finished, or to 1 when needing to continue. |
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1302 // |
116 | 1303 void calc_hauptroutine_calc_deco(void) |
1304 { | |
169
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1305 overlay unsigned char loop; |
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1306 |
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1307 for(loop = 0; loop < 16; ++loop) |
116 | 1308 { |
212 | 1309 overlay float new_presure; |
1310 overlay unsigned char backup_gas_last_used; | |
1311 | |
197 | 1312 // Do not ascent while doing a gas switch. |
203 | 1313 if( sim_gas_delay <= sim_dive_mins ) |
1314 { | |
212 | 1315 backup_gas_last_used = sim_gas_last_used; |
197 | 1316 calc_nextdecodepth(); |
116 | 1317 |
203 | 1318 //---- Finish computations once surface is reached --------------- |
1319 if( temp_depth_limit == 0 ) | |
1320 { | |
1321 copy_deco_table(); | |
1322 calc_ascenttime(); | |
1323 char_O_deco_status = 0; // calc nullzeit next time. | |
1324 return; | |
1325 } | |
212 | 1326 } |
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1327 |
212 | 1328 //---- Can we ascent to that stop at once, or is it just ascenting ? |
1329 new_presure = temp_depth_limit * 0.09985 // Convert to relative bar, | |
1330 + pres_surface; // To absolute, | |
1331 | |
1332 if( (temp_deco - new_presure) > 1.0 ) // More than 10m/mn ? | |
1333 { | |
1334 temp_deco -= 1.0; // Just keep ascending. | |
1335 sim_gas_delay = 0; // Reset gas delay, | |
1336 sim_gas_last_used = backup_gas_last_used; // and usage history. | |
1337 } | |
1338 else | |
1339 { | |
1340 temp_deco = new_presure; | |
1341 update_deco_table(); // This is a one minute stops. | |
203 | 1342 } |
197 | 1343 |
203 | 1344 //---- Then update tissue and decoplan ------------------------------- |
1345 sim_dive_mins++; // Advance simulated time by 1 minute. | |
217 | 1346 set_gas(); // Apply any simulated gas change, once validated. |
212 | 1347 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
192 | 1348 sim_tissue(1); // Simulate compartiments for 1 minute. |
116 | 1349 } |
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1350 |
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1351 // Surface not reached, need more stops... |
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1352 char_O_deco_status = 1; // calc more stops next time. |
116 | 1353 } |
1354 | |
167 | 1355 ////////////////////////////////////////////////////////////////////////////// |
169
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1356 // Simulation ascention to first deco stop. |
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1357 // |
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1358 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1359 // there is no need to break on more that 16 iterations |
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1360 // (or we are already in deep shit). |
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1361 // |
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1362 void sim_ascent_to_first_stop(void) |
116 | 1363 { |
171 | 1364 update_startvalues(); |
169
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1365 clear_deco_table(); |
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1366 |
200 | 1367 temp_deco = pres_respiration; // Starts from current real depth. |
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1368 |
212 | 1369 // Do we have a gas switch going on ? |
1370 if( sim_gas_delay > sim_dive_mins ) | |
1371 return; | |
1372 | |
203 | 1373 // Loop until first stop, gas switch, or surface is reached. |
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1374 for(;;) |
116 | 1375 { |
203 | 1376 // No: try ascending 1 full minute. |
1377 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
1378 | |
212 | 1379 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
1380 sim_limit(GF_low); | |
1381 | |
1382 // Did we reach deepest remaining stop ? | |
1383 if( temp_deco <= sim_lead_tissue_limit ) | |
1384 { | |
1385 temp_deco += 1.0; // Restore last correct depth. | |
1386 break; // Return stop found ! | |
1387 } | |
1388 | |
203 | 1389 // Did we reach surface ? |
1390 if( temp_deco <= pres_surface ) | |
1391 { | |
1392 temp_deco = pres_surface; // Yes: finished ! | |
1393 break; | |
1394 } | |
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1395 |
212 | 1396 // Check gas change 5 meter below new depth. |
1397 temp_depth_limit = (temp_deco + 0.5 - pres_surface) / 0.09985; | |
217 | 1398 deepest_gas_switch(); |
212 | 1399 if( sim_gas_delay > sim_dive_mins ) |
1400 break; | |
171 | 1401 |
203 | 1402 sim_dive_mins++; // Advance simulated time by 1 minute. |
212 | 1403 sim_alveolar_presures(); // Still uses temp_deco. |
203 | 1404 sim_tissue(1); // and update tissues for 1 min. |
1405 } | |
167 | 1406 } |
116 | 1407 |
167 | 1408 ////////////////////////////////////////////////////////////////////////////// |
1409 // calc_tissue | |
1410 // | |
116 | 1411 // optimized in v.101 |
167 | 1412 // |
184 | 1413 static void calc_tissue(PARAMETER unsigned char period) |
116 | 1414 { |
126 | 1415 for (ci=0;ci<16;ci++) |
1416 { | |
184 | 1417 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
116 | 1418 |
126 | 1419 // N2 |
200 | 1420 temp_tissue = (ppO2 - pres_tissue[ci]) * var_N2_e; |
126 | 1421 temp_tissue_safety(); |
167 | 1422 pres_tissue[ci] += temp_tissue; |
165 | 1423 |
126 | 1424 // He |
200 | 1425 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
126 | 1426 temp_tissue_safety(); |
167 | 1427 (pres_tissue+16)[ci] += temp_tissue; |
192 | 1428 } |
167 | 1429 } |
116 | 1430 |
167 | 1431 ////////////////////////////////////////////////////////////////////////////// |
192 | 1432 // calc_limit |
167 | 1433 // |
192 | 1434 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
167 | 1435 // |
192 | 1436 static void calc_limit(PARAMETER float GF_current) |
167 | 1437 { |
192 | 1438 char_O_gtissue_no = 255; |
1439 calc_lead_tissue_limit = 0.0; | |
1440 | |
1441 for (ci=0;ci<16;ci++) | |
1442 { | |
1443 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
1444 | |
1445 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
1446 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
1447 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
116 | 1448 |
192 | 1449 // Apply the Eric Baker's varying gradient factor correction. |
1450 // Note: the correction factor depends both on GF and b, | |
1451 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1452 // so that can change who is the leading gas... | |
1453 // Note: Also depends of the GF. So the calcul is different for | |
1454 // GF_low, current GF, or GF_high... | |
1455 // *BUT* calc_tissue() is used to compute bottom time, | |
1456 // hence what would happend at surface, | |
1457 // hence at GF_high. | |
1458 if( char_I_deco_model == 1 ) | |
1459 p = ( p - var_N2_a * GF_current) * var_N2_b | |
1460 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
1461 else | |
1462 p = (p - var_N2_a) * var_N2_b; | |
1463 if( p < 0 ) p = 0; | |
1464 | |
1465 pres_tissue_limit[ci] = p; | |
1466 if( p > calc_lead_tissue_limit ) | |
1467 { | |
1468 char_O_gtissue_no = ci; | |
1469 calc_lead_tissue_limit = p; | |
1470 } | |
1471 } | |
197 | 1472 |
1473 assert( char_O_gtissue_no < 16 ); | |
1474 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
167 | 1475 } |
1476 | |
1477 ////////////////////////////////////////////////////////////////////////////// | |
1478 // calc_nullzeit | |
1479 // | |
1480 // calculates the remaining bottom time | |
1481 // | |
1482 // unchanged in v.101 | |
1483 // | |
1484 static void calc_nullzeit(void) | |
1485 { | |
203 | 1486 overlay unsigned char loop; |
200 | 1487 update_startvalues(); |
167 | 1488 |
116 | 1489 char_O_nullzeit = 0; |
167 | 1490 for(loop = 1; loop <= 17; loop++) |
116 | 1491 { |
1492 backup_sim_pres_tissue(); | |
197 | 1493 sim_tissue(2); // 10 min. |
192 | 1494 sim_limit(GF_high); |
167 | 1495 |
192 | 1496 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
185 | 1497 { |
1498 restore_sim_pres_tissue(); | |
1499 break; | |
1500 } | |
1501 // Validate once we know its good. | |
1502 char_O_nullzeit += 10; | |
167 | 1503 } |
1504 | |
116 | 1505 if (char_O_nullzeit < 60) |
1506 { | |
167 | 1507 for(loop=1; loop <= 10; loop++) |
116 | 1508 { |
197 | 1509 sim_tissue(1); // 1 min |
192 | 1510 sim_limit(GF_high); |
1511 | |
1512 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
185 | 1513 break; |
1514 char_O_nullzeit++; | |
167 | 1515 } |
185 | 1516 } |
1517 } | |
116 | 1518 |
167 | 1519 ////////////////////////////////////////////////////////////////////////////// |
1520 // backup_sim_pres_tissue | |
1521 // | |
116 | 1522 void backup_sim_pres_tissue(void) |
1523 { | |
167 | 1524 overlay unsigned char x; |
1525 | |
1526 for(x = 0; x<32; x++) | |
126 | 1527 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
167 | 1528 } |
116 | 1529 |
167 | 1530 ////////////////////////////////////////////////////////////////////////////// |
1531 // restore_sim_pres_tissue | |
1532 // | |
116 | 1533 void restore_sim_pres_tissue(void) |
1534 { | |
167 | 1535 overlay unsigned char x; |
1536 | |
1537 for(x = 0; x<32; x++) | |
126 | 1538 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
167 | 1539 } |
116 | 1540 |
167 | 1541 ////////////////////////////////////////////////////////////////////////////// |
1542 // calc_ascenttime | |
1543 // | |
169
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1544 static void calc_ascenttime(void) |
116 | 1545 { |
126 | 1546 if (pres_respiration > pres_surface) |
1547 { | |
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1548 overlay unsigned char x; |
168 | 1549 |
192 | 1550 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
1551 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
169
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1552 if (ascent < 0.0) |
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1553 ascent = 0.0; |
203 | 1554 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
168 | 1555 |
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1556 for(x=0; x<32 && internal_deco_depth[x]; x++) |
203 | 1557 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
126 | 1558 } |
1559 else | |
168 | 1560 int_O_ascenttime = 0; |
167 | 1561 } |
116 | 1562 |
167 | 1563 ////////////////////////////////////////////////////////////////////////////// |
1564 // update_startvalues | |
1565 // | |
116 | 1566 // updated in v.102 |
167 | 1567 // |
116 | 1568 void update_startvalues(void) |
1569 { | |
167 | 1570 overlay unsigned char x; |
116 | 1571 |
201 | 1572 // Start ascent simulation with current tissue partial pressures. |
116 | 1573 for (x = 0;x<16;x++) |
1574 { | |
1575 sim_pres_tissue[x] = pres_tissue[x]; | |
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1576 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
116 | 1577 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
1578 } | |
197 | 1579 |
201 | 1580 // No leading tissue (yet) for this ascent simulation. |
197 | 1581 sim_lead_tissue_limit = 0.0; |
1582 sim_lead_tissue_no = 255; | |
167 | 1583 } |
116 | 1584 |
167 | 1585 ////////////////////////////////////////////////////////////////////////////// |
192 | 1586 // sim_tissue |
167 | 1587 // |
116 | 1588 // optimized in v.101 |
167 | 1589 // |
1590 // Function very simular to calc_tissue, but: | |
1591 // + Use a 1min or 10min period. | |
1592 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
184 | 1593 static void sim_tissue(PARAMETER unsigned char period) |
116 | 1594 { |
192 | 1595 for(ci=0; ci<16; ci++) |
126 | 1596 { |
184 | 1597 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
165 | 1598 |
126 | 1599 // N2 |
200 | 1600 temp_tissue = (ppO2 - sim_pres_tissue[ci]) * var_N2_e; |
126 | 1601 temp_tissue_safety(); |
167 | 1602 sim_pres_tissue[ci] += temp_tissue; |
126 | 1603 |
1604 // He | |
200 | 1605 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
126 | 1606 temp_tissue_safety(); |
167 | 1607 (sim_pres_tissue+16)[ci] += temp_tissue; |
192 | 1608 } |
167 | 1609 } |
116 | 1610 |
167 | 1611 ////////////////////////////////////////////////////////////////////////////// |
192 | 1612 // sim_limit() |
1613 // | |
1614 // New in v.111 | |
1615 // | |
1616 // Function separated from sim_tissue() to allow recomputing limit on | |
1617 // different depth, because it depends on current gradient factor. | |
167 | 1618 // |
192 | 1619 static void sim_limit(PARAMETER float GF_current) |
116 | 1620 { |
212 | 1621 assert( 0.0 < GF_current && GF_current <= 1.0f); |
1622 | |
192 | 1623 sim_lead_tissue_limit = 0.0; |
212 | 1624 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
192 | 1625 |
1626 for(ci=0; ci<16; ci++) | |
1627 { | |
1628 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
1629 | |
1630 read_buhlmann_coefficients(-1); | |
1631 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
1632 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
1633 | |
1634 // Apply the Eric Baker's varying gradient factor correction. | |
1635 // Note: the correction factor depends both on GF and b, | |
1636 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1637 // so that can change who is the leading gas... | |
1638 // Note: Also depends of the GF_current... | |
1639 // *BUT* calc_tissue() is used to compute bottom time, | |
1640 // hence what would happend at surface, | |
1641 // hence at GF_high. | |
1642 if( char_I_deco_model == 1 ) | |
1643 p = ( p - var_N2_a * GF_current) * var_N2_b | |
1644 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
1645 else | |
1646 p = (p - var_N2_a) * var_N2_b; | |
1647 if( p < 0 ) p = 0; | |
1648 | |
1649 sim_pres_tissue_limit[ci] = p; | |
1650 if( p > sim_lead_tissue_limit ) | |
1651 { | |
1652 sim_lead_tissue_no = ci; | |
1653 sim_lead_tissue_limit = p; | |
1654 } | |
1655 } // for ci | |
197 | 1656 |
1657 assert( sim_lead_tissue_no < 16 ); | |
1658 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0); | |
167 | 1659 } |
116 | 1660 |
167 | 1661 ////////////////////////////////////////////////////////////////////////////// |
169
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1662 // clear_deco_table |
167 | 1663 // |
1664 // unchanged in v.101 | |
1665 // | |
169
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1666 static void clear_deco_table(void) |
116 | 1667 { |
169
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1668 overlay unsigned char x; |
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1669 |
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1670 for(x=0; x<32; ++x) |
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1671 { |
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1672 internal_deco_time [x] = 0; |
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1673 internal_deco_depth[x] = 0; |
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1674 } |
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1675 } |
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1676 |
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1677 ////////////////////////////////////////////////////////////////////////////// |
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1678 // update_deco_table |
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1679 // |
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1680 // Add 1 min to current stop. |
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1681 // |
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1682 // Inputs: |
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1683 // temp_depth_limit = stop's depth, in meters. |
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1684 // In/Out: |
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1685 // internal_deco_depth[] : depth (in meters) of each stops. |
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1686 // internal_deco_time [] : time (in minutes) of each stops. |
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1687 // |
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1688 static void update_deco_table() |
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1689 { |
192 | 1690 overlay unsigned char x; |
200 | 1691 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
169
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1692 |
192 | 1693 for(x=0; x<32; ++x) |
1694 { | |
212 | 1695 // Make sure deco-stops are recorded in order: |
1696 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
1697 | |
200 | 1698 if( internal_deco_depth[x] == temp_depth_limit ) |
192 | 1699 { |
1700 // Do not overflow (max 255') | |
1701 if( internal_deco_time[x] < 255 ) | |
1702 { | |
1703 internal_deco_time[x]++; | |
1704 return; | |
1705 } | |
1706 // But store extra in the next stop... | |
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1707 } |
192 | 1708 |
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1709 if( internal_deco_depth[x] == 0 ) |
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1710 { |
192 | 1711 internal_deco_depth[x] = temp_depth_limit; |
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1712 internal_deco_time[x] = 1; |
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1713 return; |
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1714 } |
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1715 } |
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1716 |
192 | 1717 // Can't store stops at more than 96m. |
1718 // Or stops at less that 3m too. | |
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1719 // Just do nothing with that... |
167 | 1720 } |
116 | 1721 |
167 | 1722 ////////////////////////////////////////////////////////////////////////////// |
1723 // calc_gradient_factor | |
1724 // | |
165 | 1725 // optimized in v.101 (var_N2_a) |
116 | 1726 // new code in v.102 |
167 | 1727 // |
1728 static void calc_gradient_factor(void) | |
116 | 1729 { |
197 | 1730 overlay float gf; |
1731 assert( char_O_gtissue_no < 16 ); | |
1732 | |
116 | 1733 // tissue > respiration (entsaettigungsvorgang) |
1734 // gradient ist wieviel prozent an limit mit basis tissue | |
1735 // dh. 0% = respiration == tissue | |
1736 // dh. 100% = respiration == limit | |
197 | 1737 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
1738 if( temp_tissue < pres_respiration ) | |
1739 gf = 0.0; | |
1740 else | |
1741 { | |
1742 gf = (temp_tissue - pres_respiration) | |
1743 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
1744 * 100.0; | |
1745 if( gf > 255.0 ) gf = 255.0; | |
1746 if( gf < 0.0 ) gf = 0.0; | |
1747 } | |
1748 char_O_gradient_factor = (unsigned char)gf; | |
116 | 1749 |
1750 if (char_I_deco_model == 1) // calculate relative gradient factor | |
1751 { | |
197 | 1752 overlay float rgf; |
1753 | |
1754 if( low_depth == 0 ) | |
1755 rgf = GF_high; | |
1756 else | |
1757 { | |
1758 overlay float temp1 = low_depth * 0.09995; | |
1759 overlay float temp2 = pres_respiration - pres_surface; | |
186 | 1760 |
197 | 1761 if (temp2 <= 0) |
1762 rgf = GF_high; | |
1763 else if (temp2 >= temp1) | |
1764 rgf = GF_low; | |
1765 else | |
1766 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
1767 } | |
186 | 1768 |
197 | 1769 rgf = gf / rgf; // gf is already in percent |
1770 if( rgf < 0.0 ) rgf = 0.0; | |
1771 if( rgf > 255.0 ) rgf = 255.0; | |
1772 char_O_relative_gradient_GF = (unsigned char)rgf; | |
116 | 1773 } // calc relative gradient factor |
1774 else | |
1775 { | |
186 | 1776 char_O_relative_gradient_GF = char_O_gradient_factor; |
116 | 1777 } |
167 | 1778 } |
116 | 1779 |
167 | 1780 ////////////////////////////////////////////////////////////////////////////// |
1781 // deco_calc_desaturation_time | |
1782 // | |
116 | 1783 // FIXED N2_ratio |
1784 // unchanged in v.101 | |
167 | 1785 // |
116 | 1786 void deco_calc_desaturation_time(void) |
1787 { | |
203 | 1788 overlay unsigned short desat_time; // For a particular compartiment, in min. |
200 | 1789 overlay float temp1; |
197 | 1790 overlay float temp2; |
1791 overlay float temp3; | |
1792 overlay float temp4; | |
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1793 RESET_C_STACK |
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1794 |
126 | 1795 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
1796 pres_surface = (float)int_I_pres_surface / 1000.0; | |
200 | 1797 ppO2 = N2_ratio * (pres_surface - ppWVapour); |
126 | 1798 int_O_desaturation_time = 0; |
1799 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
1800 | |
1801 for (ci=0;ci<16;ci++) | |
1802 { | |
200 | 1803 overlay float var_N2_halftime = buhlmann_ht[ci]; |
1804 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
116 | 1805 |
126 | 1806 // saturation_time (for flight) and N2_saturation in multiples of halftime |
1807 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1808 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1809 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
1810 // N2 | |
200 | 1811 temp1 = 1.05 * ppO2; |
126 | 1812 temp1 = temp1 - pres_tissue[ci]; |
200 | 1813 temp2 = ppO2 - pres_tissue[ci]; |
126 | 1814 if (temp2 >= 0.0) |
1815 { | |
1816 temp1 = 0; | |
1817 temp2 = 0; | |
1818 } | |
1819 else | |
1820 temp1 = temp1 / temp2; | |
1821 if (temp1 > 0.0) | |
1822 { | |
1823 temp1 = log(1.0 - temp1); | |
1824 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
1825 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
1826 // minus because log is negative | |
165 | 1827 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 10 percent) , new in v.101: float_desaturation_multiplier |
126 | 1828 } |
1829 else | |
1830 { | |
1831 temp1 = 0; | |
1832 temp2 = 0; | |
1833 } | |
116 | 1834 |
126 | 1835 // He |
167 | 1836 temp3 = 0.1 - (pres_tissue+16)[ci]; |
126 | 1837 if (temp3 >= 0.0) |
1838 { | |
1839 temp3 = 0; | |
1840 temp4 = 0; | |
1841 } | |
1842 else | |
167 | 1843 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
126 | 1844 if (temp3 > 0.0) |
1845 { | |
1846 temp3 = log(1.0 - temp3); | |
1847 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
1848 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
1849 // minus because log is negative | |
165 | 1850 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
126 | 1851 } |
1852 else | |
1853 { | |
1854 temp3 = 0; | |
1855 temp4 = 0; | |
1856 } | |
116 | 1857 |
126 | 1858 // saturation_time (for flight) |
1859 if (temp4 > temp2) | |
203 | 1860 desat_time = (unsigned short)temp4; |
126 | 1861 else |
203 | 1862 desat_time = (unsigned short)temp2; |
167 | 1863 if(desat_time > int_O_desaturation_time) |
1864 int_O_desaturation_time = desat_time; | |
116 | 1865 |
126 | 1866 // N2 saturation in multiples of halftime for display purposes |
1867 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
1868 temp2 = temp2 + 80.0; // set center | |
1869 if (temp2 < 0.0) | |
1870 temp2 = 0.0; | |
1871 if (temp2 > 255.0) | |
1872 temp2 = 255.0; | |
1873 char_O_tissue_saturation[ci] = (char)temp2; | |
1874 // He saturation in multiples of halftime for display purposes | |
1875 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
1876 temp4 = temp4 + 80.0; // set center | |
1877 if (temp4 < 0.0) | |
1878 temp4 = 0.0; | |
1879 if (temp4 > 255.0) | |
1880 temp4 = 255.0; | |
167 | 1881 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
126 | 1882 } // for |
167 | 1883 } |
116 | 1884 |
167 | 1885 ////////////////////////////////////////////////////////////////////////////// |
1886 // calc_wo_deco_step_1_min | |
1887 // | |
116 | 1888 // FIXED N2 Ratio |
1889 // optimized in v.101 (...saturation_multiplier) | |
1890 // desaturation slowed down to 70,42% | |
167 | 1891 // |
1892 static void calc_wo_deco_step_1_min(void) | |
116 | 1893 { |
1894 if(flag_in_divemode) | |
1895 { | |
1896 flag_in_divemode = 0; | |
1897 set_dbg_end_of_dive(); | |
1898 } | |
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1899 |
126 | 1900 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
212 | 1901 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
1902 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
200 | 1903 ppO2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
1904 ppHe = 0.0; | |
126 | 1905 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
197 | 1906 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
126 | 1907 |
192 | 1908 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
167 | 1909 |
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1910 clear_deco_table(); |
200 | 1911 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
126 | 1912 char_O_nullzeit = 0; |
168 | 1913 int_O_ascenttime = 0; |
126 | 1914 calc_gradient_factor(); |
167 | 1915 } |
126 | 1916 |
167 | 1917 ////////////////////////////////////////////////////////////////////////////// |
1918 ////////////////////////////////////////////////////////////////////////////// | |
1919 ////////////////////////////////// deco_hash ///////////////////////////////// | |
1920 ////////////////////////////////////////////////////////////////////////////// | |
1921 ////////////////////////////////////////////////////////////////////////////// | |
126 | 1922 |
184 | 1923 #ifndef CROSS_COMPILE |
116 | 1924 void deco_hash(void) |
1925 { | |
167 | 1926 overlay unsigned char md_i, md_j; // Loop index. |
1927 overlay unsigned char md_t; | |
1928 overlay unsigned char md_buffer[16]; | |
1929 overlay unsigned char md_temp; | |
203 | 1930 overlay unsigned short md_pointer; |
167 | 1931 |
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1932 RESET_C_STACK |
126 | 1933 |
1934 // init | |
164 | 1935 for(md_i=0;md_i<16;md_i++) |
126 | 1936 { |
1937 md_state[md_i] = 0; | |
164 | 1938 char_O_hash[md_i] = 0; |
126 | 1939 } // for md_i 16 |
116 | 1940 |
126 | 1941 _asm |
167 | 1942 movlw 0x01 // md_pi address. |
1943 movwf TBLPTRU,0 | |
1944 movlw 0x7E | |
1945 movwf TBLPTRH,0 | |
1946 movlw 0x00 | |
1947 movwf TBLPTRL,0 | |
126 | 1948 _endasm; |
165 | 1949 md_i = 0; |
1950 do { | |
126 | 1951 _asm |
1952 TBLRDPOSTINC | |
1953 movff TABLAT,md_temp | |
1954 _endasm | |
165 | 1955 md_pi_subst[md_i++] = md_temp; |
1956 } while( md_i != 0 ); | |
1957 | |
126 | 1958 _asm |
167 | 1959 movlw 0x00 |
1960 movwf TBLPTRU,0 | |
1961 movlw 0x00 | |
1962 movwf TBLPTRH,0 | |
1963 movlw 0x00 | |
1964 movwf TBLPTRL,0 | |
126 | 1965 _endasm |
167 | 1966 |
126 | 1967 // cycle buffers |
1968 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
1969 { | |
1970 md_t = 0; | |
1971 for (md_i=0;md_i<16;md_i++) | |
1972 { | |
1973 if(md_pointer == 9) | |
164 | 1974 md_temp = char_O_hash[md_i]; |
126 | 1975 else |
1976 { | |
1977 _asm | |
167 | 1978 TBLRDPOSTINC |
1979 movff TABLAT,md_temp | |
126 | 1980 _endasm |
1981 } // else | |
167 | 1982 |
1983 md_buffer[md_i] = md_temp; | |
186 | 1984 md_state[md_i+16] = md_temp; |
1985 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
126 | 1986 } // for md_i 16 |
1987 | |
1988 for (md_i=0;md_i<18;md_i++) | |
1989 { | |
1990 for (md_j=0;md_j<48;md_j++) | |
1991 { | |
167 | 1992 md_state[md_j] ^= md_pi_subst[md_t]; |
126 | 1993 md_t = md_state[md_j]; |
1994 } // for md_j 48 | |
1995 md_t = (unsigned char)(md_t+1); | |
1996 } // for md_i 18 | |
164 | 1997 md_t = char_O_hash[15]; |
126 | 1998 |
1999 for (md_i=0;md_i<16;md_i++) | |
2000 { | |
167 | 2001 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
164 | 2002 md_t = char_O_hash[md_i]; |
126 | 2003 } // for md_i 16 |
2004 } // for md_pointer | |
116 | 2005 } // void deco_hash(void) |
184 | 2006 #endif |
116 | 2007 |
167 | 2008 ////////////////////////////////////////////////////////////////////////////// |
2009 // deco_clear_CNS_fraction | |
2010 // | |
116 | 2011 // new in v.101 |
167 | 2012 // |
116 | 2013 void deco_clear_CNS_fraction(void) |
2014 { | |
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2015 RESET_C_STACK |
126 | 2016 CNS_fraction = 0.0; |
2017 char_O_CNS_fraction = 0; | |
167 | 2018 } |
116 | 2019 |
167 | 2020 ////////////////////////////////////////////////////////////////////////////// |
2021 // deco_calc_CNS_fraction | |
2022 // | |
116 | 2023 // new in v.101 |
2024 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
167 | 2025 // |
116 | 2026 // Input: char_I_actual_ppO2 |
2027 // Output: char_O_CNS_fraction | |
2028 // Uses and Updates: CNS_fraction | |
2029 // Uses: acutal_ppO2 | |
167 | 2030 // |
116 | 2031 void deco_calc_CNS_fraction(void) |
2032 { | |
167 | 2033 overlay float actual_ppO2; |
126 | 2034 RESET_C_STACK |
167 | 2035 |
126 | 2036 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
116 | 2037 |
126 | 2038 if (char_I_actual_ppO2 < 50) |
2039 CNS_fraction = CNS_fraction;// no changes | |
2040 else if (char_I_actual_ppO2 < 60) | |
2041 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
2042 else if (char_I_actual_ppO2 < 70) | |
2043 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
2044 else if (char_I_actual_ppO2 < 80) | |
2045 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
2046 else if (char_I_actual_ppO2 < 90) | |
2047 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
2048 else if (char_I_actual_ppO2 < 110) | |
2049 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
2050 else if (char_I_actual_ppO2 < 150) | |
2051 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
2052 else if (char_I_actual_ppO2 < 160) | |
2053 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
2054 else if (char_I_actual_ppO2 < 165) | |
2055 CNS_fraction = 0.000755 + CNS_fraction; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 | |
2056 else if (char_I_actual_ppO2 < 170) | |
2057 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
2058 else if (char_I_actual_ppO2 < 175) | |
2059 CNS_fraction = 0.00136 + CNS_fraction; | |
2060 else if (char_I_actual_ppO2 < 180) | |
2061 CNS_fraction = 0.00180 + CNS_fraction; | |
2062 else if (char_I_actual_ppO2 < 185) | |
2063 CNS_fraction = 0.00237 + CNS_fraction; | |
2064 else if (char_I_actual_ppO2 < 190) | |
2065 CNS_fraction = 0.00310 + CNS_fraction; | |
2066 else if (char_I_actual_ppO2 < 195) | |
2067 CNS_fraction = 0.00401 + CNS_fraction; | |
2068 else if (char_I_actual_ppO2 < 200) | |
2069 CNS_fraction = 0.00517 + CNS_fraction; | |
2070 else if (char_I_actual_ppO2 < 230) | |
2071 CNS_fraction = 0.0209 + CNS_fraction; | |
2072 else | |
2073 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
116 | 2074 |
126 | 2075 if (CNS_fraction > 2.5) |
2076 CNS_fraction = 2.5; | |
2077 if (CNS_fraction < 0.0) | |
2078 CNS_fraction = 0.0; | |
2079 | |
2080 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
167 | 2081 } |
116 | 2082 |
167 | 2083 ////////////////////////////////////////////////////////////////////////////// |
2084 // deco_calc_CNS_decrease_15min | |
2085 // | |
116 | 2086 // new in v.101 |
167 | 2087 // |
116 | 2088 // calculates the half time of 90 minutes in 6 steps of 15 min |
200 | 2089 // (Used in sleepmode, for low battery mode). |
167 | 2090 // |
116 | 2091 // Output: char_O_CNS_fraction |
2092 // Uses and Updates: CNS_fraction | |
167 | 2093 // |
116 | 2094 void deco_calc_CNS_decrease_15min(void) |
2095 { | |
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2096 RESET_C_STACK |
126 | 2097 CNS_fraction = 0.890899 * CNS_fraction; |
167 | 2098 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
2099 } | |
116 | 2100 |
167 | 2101 ////////////////////////////////////////////////////////////////////////////// |
2102 // deco_calc_percentage | |
2103 // | |
116 | 2104 // new in v.101 |
167 | 2105 // |
116 | 2106 // calculates int_I_temp * char_I_temp / 100 |
2107 // output is int_I_temp | |
200 | 2108 // |
2109 // Used to compute NoFly remaining time. | |
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2110 // |
116 | 2111 void deco_calc_percentage(void) |
2112 { | |
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2113 RESET_C_STACK |
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2114 |
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2115 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
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2116 } |
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2117 |
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2118 |
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2119 ////////////////////////////////////////////////////////////////////////////// |
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2120 // deco_gas_volumes |
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2121 // |
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2122 // new in v.111 |
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2123 // |
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2124 // calculates volumes for each gas. |
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2125 // |
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2126 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
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2127 /// Gas list. First gas is the bottom gas. |
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2128 // decoplan (char_O_deco_depth, char_O_deco_time). |
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2129 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) |
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2130 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0). |
224 | 2131 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
222
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2132 // |
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2133 void deco_gas_volumes(void) |
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2134 { |
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2135 overlay float volumes[5]; |
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2136 overlay float ascent_usage; |
224 | 2137 overlay unsigned char i; |
222
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2138 RESET_C_STACK |
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2139 |
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2140 //---- initialize with bottom consumption -------------------------------- |
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2141 volumes[0] = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. |
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2142 * char_I_bottom_time // in minutes. |
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2143 * read_custom_function(56) // In deci-liter/minutes. |
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2144 * 0.1; // deci-liters --> liters. |
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2145 |
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2146 for(i=1; i<5; ++i) // Nothing yet... |
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2147 volumes[i] = 0.0; |
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2148 |
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2149 //---- Ascent usage ------------------------------------------------------ |
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2150 |
224 | 2151 ascent_usage = read_custom_function(57) * 0.1; // In litter/minutes. |
222
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2152 |
224 | 2153 // Usage up to the first stop: |
2154 // - computed at MAX depth (easier, safer), | |
222
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2155 // - with an ascent speed of 10m/min. |
224 | 2156 // - with ascent litter / minutes. |
222
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2157 // - still using bottom gas: |
224 | 2158 volumes[0] += (char_I_bottom_depth* 0.1 + 1.0) |
222
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2159 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 |
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2160 * ascent_usage; |
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2161 |
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2162 for(i=0; i<32 && char_O_deco_depth[i] > 0; ++i) |
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2163 { |
224 | 2164 overlay unsigned char j, gas; |
222
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2165 // Gas switch depth ? |
225 | 2166 for(gas=j=0; j<5; ++j) |
222
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2167 { |
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2168 if( char_O_deco_depth[i] <= char_I_deco_gas_change[j] ) |
224 | 2169 if( (gas == 0) || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
2170 gas = j; | |
222
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2171 } |
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2172 |
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2173 // usage during stop: |
224 | 2174 // Note: because first gas is not in there, increment gas+1 |
225 | 2175 volumes[gas] += (char_O_deco_depth[i]*0.1 + 1.0)// Use Psurface = 1.0 bar. |
2176 * char_O_deco_time[i] // in minutes. | |
2177 * ascent_usage | |
222
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2178 // Plus usage during ascent to the next stop, at 10m/min. |
225 | 2179 + (char_O_deco_depth[i]*0.1 + 1.0) |
2180 * (char_O_deco_depth[i] - char_O_deco_depth[i+1]) * 0.1 | |
2181 * ascent_usage; | |
222
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2182 } |
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2183 |
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2184 //---- convert results for the ASM interface ----------------------------- |
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2185 for(i=0; i<5; ++i) |
224 | 2186 if( volumes[i] > 6553.4 ) |
2187 int_O_gas_volumes[i] = 65535; | |
222
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2188 else |
224 | 2189 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
116 | 2190 } |
2191 | |
167 | 2192 ////////////////////////////////////////////////////////////////////////////// |
2193 | |
116 | 2194 void deco_push_tissues_to_vault(void) |
2195 { | |
167 | 2196 overlay unsigned char x; |
122
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2197 RESET_C_STACK |
167 | 2198 |
116 | 2199 cns_vault = CNS_fraction; |
167 | 2200 for (x=0;x<32;x++) |
2201 pres_tissue_vault[x] = pres_tissue[x]; | |
116 | 2202 } |
167 | 2203 |
116 | 2204 void deco_pull_tissues_from_vault(void) |
2205 { | |
167 | 2206 overlay unsigned char x; |
122
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2207 RESET_C_STACK |
167 | 2208 |
116 | 2209 CNS_fraction = cns_vault; |
167 | 2210 for (x=0;x<32;x++) |
2211 pres_tissue[x] = pres_tissue_vault[x]; | |
116 | 2212 } |
2213 | |
167 | 2214 ////////////////////////////////////////////////////////////////////////////// |
2215 // | |
184 | 2216 #ifndef CROSS_COMPILE |
2217 void main() {} | |
2218 #endif |